Memory mapping in ISC 2.2 device driver

[Andy Dougherty]

image processing board.  What are some good references?
    I have been able to successfully deal with the control registers 
(at address 0x230) but the board memory is memory mapped at 0xA00000.  
How do I access that address in a character device driver?  Does anyone 
have a working example?
    E-mail please; I will summarize if there is interest.
    Thanks.